JPH075968Y2 - Work type detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a work type detection device for identifying a plurality of work types having different shapes.

(Prior Art) Conventionally, when performing machining such as cutting on a plurality of workpieces having different shapes on a series of machining lines, first, the workpieces having the same shape are classified and then classified. Machining was performed while adjusting each machine tool for machining in each group. Further, in a processing line in which works of different shapes are mixed and conveyed, the work shape is identified by an optical identification device, and this data is transmitted to a machine tool to perform machining according to each work.

(Problems to be solved by the invention) In recent years, there has been a strong demand for improving the productivity of processing lines, and therefore it is required to be able to mold many types of processed products on the same processing line. However, in the above-described conventional machining process, it is necessary to classify each work having the same shape as a pre-stage of machining, and there is a problem that productivity improvement of the machining line is hindered.

Further, in the identification of the work shape by the optical identification device, the device is complicated and expensive.

The present invention is to solve the above-mentioned problems of the prior art. The present invention is provided on a processing line in which works of different shapes are mixed and transferred, and has a simple structure, and the types of the transferred works can be determined. An object is to provide a work type detection device for identifying.

(Means for Solving the Problems) In order to achieve such an object, the present invention provides a work type detection device for identifying a plurality of work types having different shapes, and a support member for supporting the work and the support member. And a movable type detection member that comes into contact with a predetermined portion of the work due to relative movement of the workpiece in a state of being supported by the workpiece, and the type detection member that is provided adjacent to the support member and is movable. A base member, an arm member that is connected to the type detection member and moves along with the movement of the type detection member, and a position detection unit that detects the position of the arm member. At least two abutting surfaces with which the predetermined portions having different dimensions along the orthogonal direction come into contact are provided at different positions along the relative movement direction of the type detection member. The type detection member moves to a different position for each work due to the difference in the contact surface with which the predetermined portion abuts and the difference in the dimension of the predetermined portion along the relative movement direction. It is a work type detection device characterized by the above.

(Operation) By the relative movement of the work supported by the support member and the type detection member, the predetermined portion of each work has a different dimension along the direction orthogonal to the relative movement direction. Accordingly, the type detection member moves to a different portion for each work due to the difference in the contact surface and the difference in the dimension of the predetermined portion along the relative movement direction. To do. Along with this movement, the arm member also moves to a predetermined position, and the position detecting means detects the position of the arm member, whereby the type of work can be identified. As described above, the type of the work is identified based not only on the difference in the dimension of the predetermined portion along the relative movement direction but also on the difference in the dimension of the predetermined portion along the direction orthogonal to the relative movement direction. You can do it.

(Embodiment) An embodiment of the work type detection device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a side view showing a work type detection device according to the present invention, FIG. 2 and FIG. 3 are views taken in the direction of arrow II shown in FIG.
It is a III arrow line view.

The illustrated work type detection device 1 is shown in FIG.
It is provided on a processing line in which works of different shapes are mixed and conveyed as shown in (C), and is used to identify the type of the work for performing machining according to the type of the conveyed work. It is something.

The illustrated workpiece type detection device 1 includes an A workpiece 3a having a length l1 from the center to the end face in the axial direction and a diameter d1 of a small diameter end 2a provided at the end, and a small diameter end 2b. The diameter is d1 which is the same as the A work 3a, and the length from the axial center to the end surface is set to l2 which is shorter than that of the A work 3a.
And the length from the axial center to the end face is 1, which is the same as the A work 3a, and the diameter of the small diameter end 2c is set to d2 which is larger than that of the A work 3a.
It is used to detect any of the (general term for the works 3a, 3b, 3c). The small-diameter end portions 2a, 2b, 2c are collectively referred to as the small-diameter end portion 2, and the small-diameter end portion 2 corresponds to a predetermined portion of the work 3.

Work type detection device 1 for identifying the types of these works 3
2 is provided in the vicinity of a work lifter 5 that supports the work 3 and moves up and down, as shown in FIG. 2. The work 3 is gripped by a gripper of a transfer device (not shown), and the work lifter is held. It is supposed to be loaded into No. 5. Further, at the time of this loading, the movement of the transfer device is set so that the workpiece 3 is loaded into the work lifter 5 with the radial surface 17 of the large diameter portion positioned.

However, if the work lifter 5 is replaced with the fingers in the transfer device that conveys the work by moving the fingers supporting the work up and down and moving back and forth, the work is carried into the work type detection device by the transfer device. You can also do it.

Further, the work lifter 5 is fixed to the base 4, and the work 3 is directly loaded into the portion by a work transfer device (not shown). The work type detection device 1 may detect the type of the work 3.

As shown in FIGS. 1 and 2, a base member 6 is installed upright on the base 4 located below the work lifter 5 so as to face the end surface of the small-diameter end portion 2 of the loaded work 3. An arm member 8 that moves so as to rotate about this shaft 7 is connected to a shaft 7 that is inserted into the upper end position of the base member 6 in the figure. As shown in FIG. 5, the arm member 8 has a flat plate shape, and two magnets 9a and 9b having a predetermined magnetic force are attached to the front surface 8a thereof. The base member 6 is not shown in FIG.

On the other hand, a type detection member 10 for rotating the arm member 8 to a predetermined position according to the type of the work 3 is coaxially connected to the shaft 7. As shown in FIG. 5, the type detecting member 10 has an inclined surface formed by cutting off a part of the end surface 11, and this inclined surface serves as a first contact surface 12. This contact surface 12 comes into contact with the small-diameter end portion 2b of the B work 3b of the works 3 carried into the work type detection device 1 by the lifter 5. Further, a second contact surface 13 with which the small-diameter end portions 2a, 2c of the A work 3a and the C work 3c of the carried-in work come into contact is formed on the end surface 11. The second contact surface 13 is formed at a position outside the first contact surface 12 along the axial direction of the work 3.

The arm member 8 rotated by such a type detection member 10
In order to identify the position, the work type detection device 1 of this embodiment has a so-called proximity switch as position detection means for detecting the magnetic force of the magnets 9a and 9b by a sensor to identify the position. A sensor mounting plate 14 for mounting such a sensor is fixed to the base member 6 so as not to interfere with the rotational movement of the arm member 8. This mounting plate
The A sensor 15a for the A work is located at a position corresponding to the magnet 9a on the shaft side of the arm member 8 rotated by the A work 3a, and the tip side of the arm member 8 rotated by the B work 3b. B work sensor 15b at a position corresponding to the magnet 9b and C work sensor 15c at a position corresponding to the magnet 9b on the tip end side of the arm member 8 rotated by the C work 3c are attached.

Reference numeral 16 in FIG. 1 is a stopper that restricts the rotational movement of the arm member 8 in the counterclockwise direction in the figure due to its own weight.

In this embodiment, the vertical movement of the work lifter 5 corresponds to the relative approach movement of the work and the type detection member 10.
In addition, the length l from the axial center to the end face of the small diameter end 2
1, l2 correspond to the dimension of the predetermined portion along the direction orthogonal to the relative movement direction, and the diameter d1 of the small-diameter end portion 2,
d2 corresponds to the dimension of the predetermined portion along the relative movement direction. In addition, the two contact surfaces 12 and 13 are the same as the type detection member 10
Are formed at different positions along the relative movement direction.

Next, a process of identifying the type of the work 3 by the work type detection device of this embodiment will be described.

First, as shown in FIG. 6, under the condition that the work lifter 5 is lifted, the work 3 gripped by the gripper of the transfer device (not shown) is carried onto the work lifter 5. At the time of this loading, the shape of the workpiece 3 is changed by setting the movement of the transporting device so that it is loaded into the workpiece lifter 5 with the axial position of the radial surface 17 of the large diameter portion of the workpiece 3 being positioned. Each work can be arranged at a predetermined position. When the work 3 is carried in, the counterclockwise rotational movement of the arm member 8 about the shaft 7 as a fulcrum is restricted by the stopper 16.

From this state, the work lifter 5 supporting the work 3
Moves downward toward the base 4, but the turning stroke of the arm member 8 differs depending on each work 3, so that each work
It will be described for each of 3a, 3b, and 3c.

First, in the case of A work 3a, from the state shown in FIG.
When the work lifter 5 moves downward, the small-diameter end portion 2a of the A work 3a comes into contact with the second contact surface 13 of the type detection member 10. As the work lifter 5 further moves downward, the small-diameter end portion 2a causes the type detection member 10 to rotate in the clockwise direction in the figure with the shaft 7 as a fulcrum, and the arm member 8 coaxially connected to the shaft 7. Also rotates clockwise in the figure. When the downward movement of the work lifter 5 is completed, the magnet 9a on the shaft side attached to the arm member 8 and the A work sensor 15a face each other as shown in FIG. The magnetic force of
Work sensor 15a detects, and work 3 is A work 3a
Can be identified. At this time, the other work sensors 15b and 15c and the magnet 9b on the front end side do not face each other, so that the type of the work 3 is not mistakenly recognized.

Then, the identification data of the type of the work 3 is sent to a machining device (not shown), and the work lifter 5 moves upward and returns to the state shown in FIG. Under this state, the A work 3a is gripped by the gripper of the transfer device and transferred to the machining device. In this machining device, a preset machining program for each work 3 is selected based on the identification data, and a predetermined work is performed on the A work 3a.

Next, in the case of the B work 3b, the length to the end surface is shorter than that of the A work 3a. Therefore, when the work lifter 5 moves downward from the state shown in FIG.
2b comes into contact with the first contact surface 12 which is the inclined surface of the type detection member 10. As the work lifter 5 further moves downward, the small-diameter end portion 2b causes the type detection member 10 to rotate in the clockwise direction in the drawing with the shaft 7 as a fulcrum, and
The arm member 8 coaxially coupled with the arm member 8 also rotates clockwise in the drawing. Then, when the downward movement of the work lifter 5 is completed, as shown in FIG.
9b attached to the tip and sensor for B work
Since it is opposed to 15b, the magnetic force of the magnet 9b is detected by the B work sensor 15b, and the work 3 moves to B
It can be identified as work 3b. Also at this time, as described above, the other work sensors 15a and 15c and the magnet 9a on the shaft side do not face each other, so that the type of the work 3 is not mistakenly recognized.

Then, the identification data of the type of the work 3 is sent to a machining device (not shown) in the same manner as described above, and the machining device performs a predetermined machining on the B work 3b.

In the case of the C work 3c, since the length from the center thereof is the same as the length of the A work 3a, when the work lifter 5 moves downward from the state shown in FIG. The small-diameter end portion 2c comes into contact with the second contact surface 13 of the type detection member 10. As the work lifter 5 further moves downward, the small-diameter end portion 2c causes the type detection member 10 to move.
Rotates in the clockwise direction in the figure with the shaft 7 as a fulcrum, and the arm member 8 coaxially connected to the shaft 7 also rotates in the clockwise direction in the figure. At this time, since the diameter of the small-diameter end portion 2c is larger than that of the A work, the pivot stroke of the arm member 8 is larger than that of the A work, and when the downward movement of the work lifter 5 is completed, it is shown in FIG. In this way, the tip side magnet 9b attached to the arm member 8 and the C work sensor 15c face each other. This allows the magnet 9
The magnetic force b is detected by the C work sensor 15c, and the work 3 can be identified as the C work 3c. Also at this time, as described above, the other work sensors 15a and 15b and the magnet 9a on the shaft side do not face each other, so that the type of the work 3 is not mistakenly recognized.

Then, the identification data of the type of the work 3 is sent to a machining device (not shown) in the same manner as described above, and the C machining 3c is subjected to predetermined machining by this machining device.

As described above, in the present embodiment, the two contact surfaces 1 at different positions along the vertical movement direction of the type detection member 10.
By forming 2 and 13, respectively, small diameter end portions 2a and 2b having the same diameter dimension d1 along the vertical movement direction but different length dimensions l1 and l2 along the direction orthogonal to the vertical movement direction are provided. Even if there are two types of workpieces 3a and 3b, the type detection member 10
Can be moved to different positions, and the types of these works 3a and 3b can be identified.

In this way, the diameter dimension d1 of the small-diameter end portion 2 along the vertical movement direction,
Not only the difference in d2 but also the difference in the length dimension of the small-diameter end portion 2c along the direction orthogonal to the vertical movement direction, the types of the works 3a, 3b, 3c can be identified, so that the structure is simple. It is possible to identify a plurality of work types and improve the productivity of the processing line.

The illustrated work type detection device 1 is for identifying each work shown in FIG. 4, and the work 3 in this case is a gear shaft of an automobile part, but the work is not limited to this. However, the type of any component can be detected as long as the components have different end lengths and diameters.

As shown in FIG. 5, the type detecting member 10 has a first contact surface 12 formed by an inclined surface, but by forming a step portion instead of the inclined surface, the first contact surface is formed. surface
12 may be formed.

Further, the type detection member 10 is for rotating the arm member to a different position for each work when the work having a different shape moves to a predetermined position, and is not limited to the shape shown in FIG. However, it can be appropriately modified and used according to the shape of the work.

Further, in the illustrated embodiment, the work lifter is moved vertically above and above the base 4, but the base 4 can be moved up and down by using the lifter 5 as a fixing member. Is. Further, the base 4 may be the transfer device, and the work type detection device of the present invention may constitute the transfer device.

(Effects of the Invention) As described above, according to the present invention, the workpiece supported by the support member and the type detection member relatively move toward each other, so that the predetermined portion of each workpiece is The type detection member is in contact with any one of at least two contact surfaces according to a difference in dimension along a direction orthogonal to the relative movement direction, and the type detection member is the difference in contact surface and the predetermined portion along the relative movement direction. Due to the difference in size, the workpieces move to different positions. Along with this movement, the arm member also moves to a predetermined position, and the position detecting means detects the position of the arm member, whereby the type of work can be identified. As described above, the type of the work is identified based not only on the difference in the dimension of the predetermined portion along the relative movement direction but also on the difference in the dimension of the predetermined portion along the direction orthogonal to the relative movement direction. Since it is possible to identify a plurality of types of works with a simple structure, it is possible to obtain a practically great effect of improving the productivity of the processing line.

[Brief description of drawings]

FIG. 1 is a side view showing a work type detection device according to the present invention, FIG. 2 is a front view in the direction of arrow II in FIG. 1, and FIG. 3 is a plan view in the direction of arrow III in FIG. FIGS. 4 (A) to 4 (C) are views showing works to be identified in the same embodiment, FIG. 5 is an enlarged perspective view showing the arm member and type detection member of FIGS. 8 to 8 are enlarged side views of essential parts showing a process of identifying a work by the work type detection device of the present invention. 1 ... Work type detection device, 2 (2a, 2b, 2c) ... Small diameter end (predetermined part), 3 ... Work, 3a ... A work, 3b
...... B work, 3c …… C work, 4 …… base, 5 …… work lifter (support member), 6 …… base member, 8 …… arm member, 9a, 9b …… magnet (position detection means ),Ten
...... Type detection member, 15a-c ...... A-C work sensor (position detection means).

Claims (1)

[Scope of utility model registration request] 1. A work type detection device for identifying a plurality of types of works having different shapes, wherein the support member for supporting the work and the work in a state of being supported by the support member are moved relatively toward each other. A movable type detection member with which a predetermined portion of a workpiece comes into contact, a base member provided adjacent to the support member and movably attached to the support member, and the type detection member connected to the type detection member. An arm member that moves in accordance with the movement of the arm member, and a position detection unit that detects the position of the arm member, and at least the predetermined portion having a different size along the direction orthogonal to the relative movement direction abuts. The two contact surfaces are formed at different positions along the relative movement direction of the type detection member, and the type detection member contacts the predetermined portion. A work type detection device that moves to a different position for each work due to a difference in abutting surfaces in contact with each other and a difference in size of the predetermined portion along the relative movement direction.